{"title":"A combined antenna array and LMMSE multi-user detection DS-CDMA receiver in multipath fading channels","authors":"N. A. Mohamed, J. Dunham","doi":"10.1109/ETS.2000.916507","DOIUrl":null,"url":null,"abstract":"In this paper, a DS-CDMA receiver that combines adaptive beamforming together with a linear minimum mean square error (LMMSE) multi-user detection in a multipath fading channel is proposed and analyzed. By beamforming, the desired user's signal is enhanced and the co-channel interference from other directions is reduced. For in-beam multiple access interference reduction; LMMSE multi-user detection is used. The average uncoded bit error rate (BER) as a function of the average antenna signal-to-noise ratio (SNR) and the number of receiving antennas are examined in a frequency selective Rayleigh fading channel. Performance comparison between LMMSE, decorrelating and parallel interference cancellation detectors have been carried out. Simulation results show an increase in system capacity and/or improving the coverage.","PeriodicalId":291027,"journal":{"name":"2000 IEEE Emerging Technologies Symposium on Broadband, Wireless Internet Access. Digest of Papers (Cat. No.00EX414)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2000-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2000 IEEE Emerging Technologies Symposium on Broadband, Wireless Internet Access. Digest of Papers (Cat. No.00EX414)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ETS.2000.916507","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper, a DS-CDMA receiver that combines adaptive beamforming together with a linear minimum mean square error (LMMSE) multi-user detection in a multipath fading channel is proposed and analyzed. By beamforming, the desired user's signal is enhanced and the co-channel interference from other directions is reduced. For in-beam multiple access interference reduction; LMMSE multi-user detection is used. The average uncoded bit error rate (BER) as a function of the average antenna signal-to-noise ratio (SNR) and the number of receiving antennas are examined in a frequency selective Rayleigh fading channel. Performance comparison between LMMSE, decorrelating and parallel interference cancellation detectors have been carried out. Simulation results show an increase in system capacity and/or improving the coverage.
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